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Technical Guides
FeaturedRSTRI LAB | Get Faster for Free: Triathlon Aero Position Guide
Using real race photos, we look at aerobar width, head-and-arm integration, flexibility, drop and reach—and why the fastest aero position is the one you can safely hold for hours.
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From Wheels to Aerobars: What the 2026 Kona Bike Count Reveals
Aerobar Other rose from 10.11% to 18.04% at Kona 2026. RSTRI examines independent cockpit makers and hydration integration.
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3D Printing in Triathlon: What Is Actually Worth Paying For?
From lattice saddle padding to custom cockpits: distinguish fit prototypes from final structural parts and evaluate the problem, validation and ownership requirements before orderi...
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From Praying Mantis to System Aerodynamics: Four Technical Observations from Kona 2026
The revealing part of Kona’s 2026 equipment count is not the brand ranking. It is how once-radical solutions—high hands, personalized aerobars, integrated hydration and ultra-deep...
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What Kona 2026 Pro Bike Positions Tell Us About Modern Triathlon Aerodynamics
A technical reading of 14 side-view pro positions: forearm tilt, elbow geometry, torso angle, and the limits of aerodynamic inference.
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Where Should Bottles Go? AeroCoach’s 2026 and 2020 Tests
Two AeroCoach studies show how bottle drag depends on rider, frame, shape and location. The 2026 road-bike and 2020 TT-bike figures need distinct contexts.
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Why Can a Bottle Sometimes Reduce Drag on a Triathlon Bike?
Adding a bottle does not always add drag. Its effect depends on the rider's airflow, position, and the limits of the test.
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Behind the Saddle Hydration: Why Bottle Position Matters More Than You Think
A bottle behind the saddle may sit in the rider’s wake, but height, angle and distance change the airflow it meets. The relevant question is where the bottle sits relative to this...
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Where Should You Carry Your Water? Aero Testing of BTA, Frame and BTS Bottle Positions
AeroCoach tested bottle locations on one rider and TT bike. The 500 ml round bottle ranged from +0.7 W behind the saddle to +5.0 W on the downtube at 40 km/h; the result is a guide...
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